Record number of Americans killed by heat in 2023: Research

Extreme heat killed more Americans in 2023 than any other year over nearly a quarter century of records, according to research published Monday in the Journal of the American Medical Association.

At least 2,325 people died from the heat last year, according to the study, which included deaths with heat as both an underlying and contributing factor.

The study, which used records dating back to 1999, found that annual deaths mostly remained steady, including a low point in 2004...